Nailur Rahmi, “A CHARACTERISTICS OF USHUL FIQH IMAM SHAFI’I THOUGHT IN THE BOOK OF AR TREATISE: KARAKTERISTIK PEMIKIRAN USHUL FIKIH IMAM SYAFI’I DALAM KITAB AR RISALAH”, EAJ, vol. 4, no. 1, pp. 37-62, Jun. 2023.